As of November 21, 2025, there has been a confirmed case of EHM in Colorado, part of the EHV-1/EHM outbreak linked to the Women’s Professional Rodeo Association (WPRA) World Finals and Elite Barrel Race event in Waco Texas on November 5-9.

Will Colorado implement mandatory movement restrictions or quarantine orders for horses due to the outbreak by December 12?

Resolved based on an announcement from Colorado Department of Agriculture, Colorado State Veterinarian's Office, or state animal health officials.

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